org.sonar.plugins.buildstability.ci.hudson.HudsonUtils.java Source code

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Here is the source code for org.sonar.plugins.buildstability.ci.hudson.HudsonUtils.java

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/*
 * Copyright (C) 2010 Evgeny Mandrikov
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.sonar.plugins.buildstability.ci.hudson;

import java.io.IOException;

import org.apache.commons.httpclient.HttpClient;
import org.apache.commons.httpclient.methods.GetMethod;
import org.apache.commons.httpclient.methods.PostMethod;

/**
 * @author Evgeny Mandrikov
 */
public final class HudsonUtils {

    /**
     * Hide utility-class constructor.
     */
    private HudsonUtils() {
    }

    public static void doLogin(HttpClient client, String hostName, String username, String password)
            throws IOException {
        String hudsonLoginEntryUrl = hostName + "loginEntry";
        GetMethod loginLink = new GetMethod(hudsonLoginEntryUrl);
        client.executeMethod(loginLink);
        checkResult(loginLink.getStatusCode(), hudsonLoginEntryUrl);

        String location = hostName + "j_security_check";
        while (true) {
            PostMethod loginMethod = new PostMethod(location);
            loginMethod.addParameter("j_username", username);
            loginMethod.addParameter("j_password", password);
            loginMethod.addParameter("action", "login");
            client.executeMethod(loginMethod);
            if (loginMethod.getStatusCode() / 100 == 3) {
                // Commons HTTP client refuses to handle redirects for POST
                // so we have to do it manually.
                location = loginMethod.getResponseHeader("Location").getValue();
                continue;
            }
            checkResult(loginMethod.getStatusCode(), location);
            break;
        }
    }

    private static void checkResult(int httpStatusCode, String hudsonLoginEntryUrl) throws IOException {
        if (httpStatusCode != 200) {
            throw new IOException("Unable to access the Hudson page : " + hudsonLoginEntryUrl
                    + ". HTTP status code : " + httpStatusCode);
        }
    }
}